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Solid polycarboxylate superplasticizer and preparation method thereof
The invention discloses a solid polycarboxylate superplasticizer and a preparation method thereof. The solid polycarboxylate superplasticizer is prepared from the following raw material components inparts by weight: 100 to 140 parts of an unsaturated polyether macromonomer, 12 to 35 parts of an unsaturated carboxylic acid or unsaturated carboxylic acid derivative, 0.6 to 2.2 parts of a non-reactive solubilizer, 0.6 to 1.92 parts of an initiator and 0.6 to 1.6 parts of a chain transfer agent. The non-reactive solubilizer is polyether amine modified polysiloxane, and is prepared by taking double-epoxy-terminated polysiloxane and polyether amine as raw materials and reacting in an organic solvent at 65-95 DEG C for 3-6 hours. The powdery solid polycarboxylate superplasticizer is obtained bybulk polymerization, cooling and crushing. The non-reactive solubilizer can increase the solubility among the reaction raw materials in the polymerization process, effectively reduces the viscosity ofthe system in the reaction process, increases the mass and heat transfer among the reaction raw materials, enables the monomers to react fully and enable the macromonomer conversion rate to be high,and the prepared solid polycarboxylate superplasticizer can achieve the water reducing performance of a water-based polycarboxylate superplasticizer.
本发明公开了一种固体聚羧酸减水剂及其制备方法，该减水剂包括如下重量份的原料组分：不饱和聚醚大单体100～140份、不饱和羧酸或不饱和羧酸衍生物12～35份、非反应型增溶剂0.6～2.2份、引发剂0.6～1.92份、链转移剂0.6～1.6份。非反应型增溶剂是聚醚胺改性聚硅氧烷，由双环氧基封端聚硅氧烷和聚醚胺为原料，在有机溶剂中65～95℃下，反应3～6小时制备而成。本发明通过本体聚合经冷却破碎得到粉末状固体聚羧酸减水剂。非反应型增溶剂在聚合过程中可增大反应原料之间的溶解性，有效降低体系在反应过程中的粘度，增大反应原料之间的传质传热，单体之间充分反应，大单体转化率高，所制备的固体聚羧酸减水剂可达到水性聚羧酸减水剂减水性能。
Solid polycarboxylate superplasticizer and preparation method thereof
The invention discloses a solid polycarboxylate superplasticizer and a preparation method thereof. The solid polycarboxylate superplasticizer is prepared from the following raw material components inparts by weight: 100 to 140 parts of an unsaturated polyether macromonomer, 12 to 35 parts of an unsaturated carboxylic acid or unsaturated carboxylic acid derivative, 0.6 to 2.2 parts of a non-reactive solubilizer, 0.6 to 1.92 parts of an initiator and 0.6 to 1.6 parts of a chain transfer agent. The non-reactive solubilizer is polyether amine modified polysiloxane, and is prepared by taking double-epoxy-terminated polysiloxane and polyether amine as raw materials and reacting in an organic solvent at 65-95 DEG C for 3-6 hours. The powdery solid polycarboxylate superplasticizer is obtained bybulk polymerization, cooling and crushing. The non-reactive solubilizer can increase the solubility among the reaction raw materials in the polymerization process, effectively reduces the viscosity ofthe system in the reaction process, increases the mass and heat transfer among the reaction raw materials, enables the monomers to react fully and enable the macromonomer conversion rate to be high,and the prepared solid polycarboxylate superplasticizer can achieve the water reducing performance of a water-based polycarboxylate superplasticizer.
本发明公开了一种固体聚羧酸减水剂及其制备方法，该减水剂包括如下重量份的原料组分：不饱和聚醚大单体100～140份、不饱和羧酸或不饱和羧酸衍生物12～35份、非反应型增溶剂0.6～2.2份、引发剂0.6～1.92份、链转移剂0.6～1.6份。非反应型增溶剂是聚醚胺改性聚硅氧烷，由双环氧基封端聚硅氧烷和聚醚胺为原料，在有机溶剂中65～95℃下，反应3～6小时制备而成。本发明通过本体聚合经冷却破碎得到粉末状固体聚羧酸减水剂。非反应型增溶剂在聚合过程中可增大反应原料之间的溶解性，有效降低体系在反应过程中的粘度，增大反应原料之间的传质传热，单体之间充分反应，大单体转化率高，所制备的固体聚羧酸减水剂可达到水性聚羧酸减水剂减水性能。
Solid polycarboxylate superplasticizer and preparation method thereof
一种固体聚羧酸减水剂及其制备方法
2020-08-14
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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